The sumpn sumpn might in fact be bad, but as I understand it....when you have an obstruction, or like DD said solar flares or the like, the unit will only search for so long and will not then try to re-acquire until it's powered off and then back on. Like you, on one trip, I plopped it down and it never locked, but I did not attempt to stow and redeploy...fished the whole day and it never did. The next trip out it locked flawlessly. A couple months later, I was fishing a bluff bank blocking the West and South and it failed to lock. Fished out away from the bluff, stowed and redeployed and it reacquired and never lost it even when I went back in close on the bluff. I think total now, with about a year of ownership, it's failed to lock on me about 3 or 4 times, but only that first time did it happen for the whole day.

Dunno.....maybe I'm all wrong on the time out of the acquisition routine / stow / redploy thing, but it does stand to reason.

If you attempted on the trailer....were you under cover like a carport? Need full sky usually, else it'll give you fits. Neither my 12 satelitte or 16 satelite receiver GPSs will acquire under my boat shed and I don't thing the Terrova can lock near that many.

Wannabe...